Since Henry George (1839-1897) economists have been arguing that a tax on unim- proved land is an ideal tax on e¢ ciency grounds. Output taxes, on the other hand, have distortional effects on the economy. This paper shows that under asymmetric information output tax might be used along with...

We consider the problem of a seller who faces a privately informed buyer and only knows one moment of the distribution from which values are drawn. In face of this uncertainty, the seller maximizes his worst-case expected profits. We show that a robustness property of the optimal mechanism...

This note considers the problem of a principal (she) who faces a privately informed agent (he) and only knows one moment of the distribution from which his types are drawn. Payoffs are non-linear in the allocation and the principal maximizes her worst-case expected profits. We recast the robust...

Managed care capitation contracts provide monetary incentives for doctors to save medical costs while standard health insurance contracts do not. The paper proposes an alternative model for insurance markets which is used to analyze managed care contracts. In our model, households would like to...

O objetivo do artigo é mostrar que a assimetria de informação presente na relação entre governo e produtores agropecuários pode constituir a origem dos problemas que ainda persistem na aplicação do Imposto Territorial no Brasil. Atra-vés da construção de um modelo teórico simples,...